Improvement in presses



G. B. Boor/1ER. PRESS.

Patented Feb.. Z9. 18'76.

, ,In were Zw? JM W N.P|'ERS. FHOTO-LITHQGRAPFIER. WASHINGTON. D. C.

UNITED j PATENT OFFICE.

VeEoaeE B. BooMEE, or s YEAo'UsE, NEW YORK.

i IMPROVEMENT IN PRESSES.

Specification formingpart of Letters Patent N0. 174, l07, dated February 29, 1876 application filed August 30, 1875.

To all whom it may concern Be it known that I, GEORGE B.'BOOMER, of the city of Syracuse, in the county of Onondaga and State of New' Yorkhave invented a certain new and useful Improvement in Presses; and I do hereby declare that the fol? lowing is a full, clear, andexact description of the construction and operation of the same, reference being had to the accom panyiu g drawings, iu which- Figure l is a front elevation. Fig. 2 is a horizontal section in line .r :l: of Fig. l. Fig. 3 is a vertical section in liuc y y,

My improvement relates to an adjustable blocking attached to and used beneath the main follower or head, to which the toggle- ...levers are attached, as hereinafter described.

The drawings show a toggle-lever press.

A B are the head and foot blocks. C U C C are the rods, upon which run the follower D. E is a standard rising .from the follower and passing through a socket in the headblock. Gr G G G are four toggle-levers, connecting the head-block and follower, and Il is a right-and-left screw, running through nuts a a, by which the toggle-levers are operated. rlhe standard E has a vertical slot, b, in which rests a hub or bearing, c, made fast to the screw, by which the screw is kept from end motion `and the levers from consequent distortion under stra-in. rlhus far the press is otordinary construction.

In a press of this kind it requires considerable labor and time, to run the follower up or down in position to meet articles ot'various sizes to be pressed, owing to the slow motion of the screw and toggle-levers. It is customary to use loose bloekings for the purpose, but it is frequently troublesome to lit them properly and accurately in place,'and` in loose and detachable form they are inconvenient to handle.

It is the object of my invention to remedy this 'diflieult f; and my invention consists, essentially, of an adjustable blocking, constructed as'hereinafter described, and attached to the main follower or head, as follows:

The follower D has upon its under side two ledges or ways, d d, at suitable distance apart and extending crosswise of the same. On these ways rests the flange f of a screw-collar, I, which slides bodily therein. This collar is cut with a female thread, into which screws the male 'screw of the block K, the latter having a broad flanged bottom, of round, square, or other form adapted to lit the articles to be pressed. rlhe flange f of the screw-collar is adapted to rotate freely in the ways d d, and power may be applied to rotate the collar by means of pins or spokes g g 011 the body ofthe collar, to which a tubular lever is applied, or by any other suitable means. The block K may, therefore, be adjusted higher or lower either by turning the block itself in the screw-collar or by turning the collar around the threaded end ofthe block. i The screwcollar is centered in the ways by means of two pins or screws, h It, which pass down through -the main follower and rest in a circular depression, i, in the top of the screw-collar. These screws or pins hold the screw-'collar in place centrally, but allow a free rotation. When one of the pins is turned up so as to be free of the co1- lar, the latter can be slid endwise in the ways to one side of the center, as indicated by the 4dotted lines, Fig. 2, the object of which is to allow the article to which pressure is applied to be readily inserted in or removed from the press.

This device is particularly adapted to a toggle-press, in` which the press has the greatest power when the arms are nearly perpendicular; but the material is not always in position to receive the pressure at that point. By the use of this device the blocking can be brought readily to position and turned down till part of the pressure is applied, and the heavy pressure of the toggle-levers can then be used.

By this means much time and labor are saved. lf desired, the upper follower D can be dispensed with, and a head or bearing for the attachment of the the toggle-levers used in its place, and the adjustable blocking may be connected therewith, as before described,

and the part K may be extended and have l bearing upon the rodsA G C in the same manner as an ordinary follower. The effect will be the same, as before stated. i

I do not claim, broadly, a follower which is removable from over the press-box for lling the box; but i said collar, the whole:constructedknnd Jar-ly ranged to opera-te in the manner and for the purpose specified.

2. The combination, with the 4follower yor head D and the screw-collar I, of the screws or pins h h, restingin a depression of the collar, in the manner `und for the purpose especi- In witness whereof I have hereunto singed 'f-mynamein the presence of two subscribing witnesses.

G'Eo. B. BooMER.

Witnesses:

fR. VF.:0sGrooD, E. B. SCOTT.v 

